Finding the Fourth Proportional to 1,085.08, 1,624.42 and 672.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,085.08 : 1,624.42 = 672.89 : x
2. Step 2: Convert to fraction form
   1,085.08/1,624.42 = 672.89/x
3. Step 3: Cross multiply
   1,085.08x = 1,624.42 × 672.89
4. Step 4: Simplify right side
   1,085.08x = 1,093,055.97
5. Step 5: Solve for x
   x = 1,093,055.97/1,085.08
6. Step 6: Final answer
   x = 1,007.35